Search results

Introduction In recent years optical full-field measuring techniques are increasingly being used in research and industry as development and design tools for improved characterization of materials and components.
Out of the contour and displacement measurement, the image correlation technique provides material parameters far into the range of plastic deformation.
Car bonnet frame structure The objects measured in this test are car bonnet frame structures made of fiber reinforced thermoplastic composite material (polyamide (PA)).
Using this and the material parameter the mode shapes are calculated using the NASTRAN software package.
Journal of Sound and Vibration, 330(8), 1599–1620(2011).

A Novel Spray Deposition Technology for the Preparation of Aluminum Alloy and Aluminum Alloy Matrix Composite Rings with Large Dimensions Chen Zhenhua a , Teng Jie b , Yan Hongge c, Chen Gang d School of Materials Science and Engineering, Hunan University, Changsha 410082, P.R.China b tengjie1312@hnu.cn Keywords: Spray Deposition, Aluminum Alloy, Composite, Ring Abstract.
Some technological difficulties such as the inferior filling capability of the melt into the ring model, the coarse and segregated microstructure, the high inner stress and the lower usage efficiency of raw materials, exist in the production of these rings via the conventional casting processes or by forging ingots followed by the chipping process.
Experimental Details Material Preparation.
Reference [1] J.Zhou, J.Duszczyk and B.M.Korevaar: J.Mater.Sci Vol.26 (1991), p.3041 [2] Chen Zhenhua, Huang Peiyun, Jiang Xiangyang, et al: The Chinese Journal of Nonferrous Metals (in Chinese) Vol.5 (1995), p.69 [3] A.T.
Zhang: Metallurgical and Materials Transaction A Vol.25A (1994), p. 969 [4] J.Yang, et al: Scripta metall. mater Vol.39 (1991), p.1863 [5] Wu.

Experimental coefficients a,a’,b,b’ are functions of the laminate thickness, material, layup, impact mass and size, and boundary conditions.
References [1] Vermeulen B., van Tooren M.J.L., Design case study for a comparative performance analysis of aerospace materials, Materials and Design 27: 10-20, 2006
[8] Davies G.A.O., Olsson R., Impact on composite structures, The Aeronautical Journal (2004), pp.541-563
[9] Boll D.J., Bascom W.D., Weidner J.C., Murri W.J., A microscopic study of impact damage of epoxy-matrix carbon-fibre composites, J. of Materials Science, Vol 21 (1986), pp.2667-2677

However, the shell of refrigerating system must be made of resisting pressure materials because the saturation pressure of CO2 is high.
The disks were cut from the cylindrical bar of the roller material.
The lower flat disk (roller material) was mounted on a rotating shaft in an oil bath.
Lorentzen: International Journal of Refrigeration Vol. 18 (1995), pp. 190-197 [2] M.
Bullard: Progress in Energy and Combustion Science Vol. 30, (2004), pp. 119-174 [3] S.

Fe sheath was considered as one of suitable materials however hard it is.
From x-ray analysis, interaction between the constituents of precursor powder and the sheath material can also be excluded.
Acknowledge This work was partially supported by National Natural Science Foundation project (contract No. 50472099) and National Basic Research Program of China (contract No. 2006CB601004).
Conf. on Superconductivity, CMR & Related Materials: Novel Trends (SCRM2002), Giens, France, 1-8 June 2002 [2] A.
Schultz, JOURNAL OF APPLIED PHYSICS 97, 056105(2005), pp.1-3

The Al alloy material is used to make automotive engine cylinder block (see Fig. 1) and even lightens the vehicle's weight, thus, the demand of Al alloy automotive engine cylinder is large.
Fig.1 3D modeling of cylinder block Under the pressure of price rising of raw materials, compare to resin sand process, we should find a process with relatively lower cost and better quality to improve profit margins of cylinder becomes extremely important.
The parting surface must be tight to feed materials evenly, shorten the forming period, control cooling time and velocity.
Vacuum degree depends on the casting quality, wall thickness and the alloy materials.
Journal of Industrial Technology.

Dissolution Behavior of Submicron Biphasic Tricalcium Phosphate Powders Ruibing Wang1,a, Wenjian Weng 1,a* , Xuliang Deng2, b * , Kui Cheng1, c , Xinggang Liu2,b, Piyi Du 1,d , Ge Shen 1,e, Gaorong Han1,f , 1 Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China 2 Peking University School and Hospital of Stomatology, Beijing 100081, China awengwj@zju.edu.cn, bdengxuliang@hotmail.com, c chengkui@gmail.com, didupy@zju.edu.cn, e sg@zju.edu.cn, fhgr@zju.edu.cn Keywords: Tricalcium phosphate, biphasic powders, submicron size, dissolution behavior Abstract: Submicron α-tricalcium phosphate (α-TCP), β-tricalcium phosphate (β-TCP) and biphasic α/β-TCP powders were prepared by an amorphous calcium phosphate (ACP) precursor way.
If α-TCP is combined with β-TCP to form a biphasic α/β-TCP, the biphasic material could have an optimized reaction kinetic to control a dissolution-reprecipitation behavior, attaining desired ion releases or morphological variations required for bone formation.
Materials and Methods ACP powders were obtained by taking a reaction in aqueous Na3PO4·12H2O-CaCl2-poly (ethylene glycol) system, washing and freeze-drying the resulting precipitates.
Jemal: Journal of Materials Chemistry, Vol.13(2003), p.888

Fig.2 Schematic representation of a disk spring It is found that the material and geometrical properties can be adjusted to obtain the desired nonlinear stiffness characteristics.
Zhou: Ultra-low frequency passive vertical vibration isolation system (in Chinese), Science in China.
Huang: Performance of torsion spring isolator (in Chinese), Chinese Journal of Solid Mechanics.
Zhang: Nonlinear resonance response analysis of a kind of passive isolation system with quasi-zero stiffness (in Chinese), Journal of Hunan University (Natural Sciences).
Hua: Characteristics of a novel low-frequency isolator (in Chinese), Journal of Vibration and Shock.

The model was created from 3 types of material: the high-rise structure was created by 3D printer, the passage was made of plexi-glass, and low-rise buildings were made of polystyrene.
Acknowledgements This paper was created with the support of the Ministry of Education, Science, Research and Sport of the Slovak Republic within the Research and Development Operational Programme for the project "University Science Park of STU Bratislava", ITMS 26240220084 and the Scientific Grant Agency - VEGA grants No. 1/0544/15 and No. 1/0265/16.
Storms, Wind environmental condition in passages between buildings, Journal of Wind Engineering and Industrial Aerodynamics. 24 (1) (1986) 19-31
Bedant, Wind environment around buildings: a knowledge –based approach, Journal of Wind Engineering and Industrial Aerodynamics. 41-44 (1992) 2377-2388
Carmeliet, Pedestrian Wind Environment around Builings: Literature Reviw and Practival Examples, Journal of Thermal Envelope and Building Science, 28 (2) (2004), 107-159

Sharaf Adel5,f, Khaled Koussa6,g 1Faculty of Exact Science, Tahri Mohamed University, Bechar- Algeria 2Unité de Rechercher en Energies Renouvelables en Milieu Saharien, URER-MS, Adrar.
Algeria 3Faculty of Technology, Tahri Mohamed University, Bechar- Algeria 4Modeling and Simulation in Materials Science Laboratory, Department of Physics, Faculty of Exact Sciences, University Djilali Liabès of Sidi Bel-Abbés, Algeria 5Sharaf Energy Systems, Incorporated, Fredericton-NB, Canada 6Ecole Nationale Polytechniques, Laboratoire LAAS.
Efe, Analysis and elimination of harmonics by using passive filters, Bitlis Eren University Journal of Science and Technology, 5 (2015)
Sampaio, Single-phase grid-connected photovoltaic system with active power line conditioning, Power Electronics Journal, 20 (2015) 8-18
Lashab, Real time simulation of MPPT algorithms for PV energy system, International Journal of Electrical Power & Energy Systems, 83 (2016) 67-78